CVE-2017-12236

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Summary

CVECVE-2017-12236
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-09-29 01:34:00 UTC
Updated2019-10-09 23:22:00 UTC
DescriptionA vulnerability in the implementation of the Locator/ID Separation Protocol (LISP) in Cisco IOS XE 3.2 through 16.5 could allow an unauthenticated, remote attacker using an x tunnel router to bypass authentication checks performed when registering an Endpoint Identifier (EID) to a Routing Locator (RLOC) in the map server/map resolver (MS/MR). The vulnerability is due to a logic error introduced via a code regression for the affected software. An attacker could exploit this vulnerability by sending specific valid map-registration requests, which will be accepted by the MS/MR even if the authentication keys do not match, to the affected software. A successful exploit could allow the attacker to inject invalid mappings of EIDs to RLOCs in the MS/MR of the affected software. This vulnerability affects Cisco devices that are configured with LISP acting as an IPv4 or IPv6 map server. This vulnerability affects Cisco IOS XE Software release trains 3.9E and Everest 16.4. Cisco Bug IDs: CSCvc18008.

Risk And Classification

Problem Types: CWE-287

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Ios Xe 16.5.1c All All All
Operating System Cisco Ios Xe 3.2.0ja All All All
Operating System Cisco Ios Xe 3.9.1e All All All
Operating System Cisco Ios Xe 16.5.1c All All All
Operating System Cisco Ios Xe 3.2.0ja All All All
Operating System Cisco Ios Xe 3.9.1e All All All

References

ReferenceSourceLinkTags
Cisco IOS XE LISP Protocol Bug Lets Remote Users Bypass Authentication on the Map Server/Map Resolver - SecurityTracker SECTRACK www.securitytracker.com Third Party Advisory, VDB Entry
Cisco IOS XE Software Locator/ID Separation Protocol Authentication Bypass Vulnerability CONFIRM tools.cisco.com Vendor Advisory
Malformed Request BID www.securityfocus.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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